Paul F. Dietz wrote:
> Or you could pump that heat up to 200 K and reduce the size of
> your radiator by orders of magnitude.
Approximately how much heat pump power would that require per watt of
heat pulled out of the hydrogen?
Magnetocaloric refrigerators looked promising, but I have no idea how
to calculate, estimate, or find their heat pump efficiency when trying
to refrigerate liquid hydrogen.
Re: heat pumps ... They don't really pump it backwards, a valve interchanges the outdoor and indoor heat exchanger coils.... The compressor limits the temperature differential the heat pump can handle efficiently. ... (sci.electronics.design)
Re: Hesitant 1972 Bay ... hesitant at low revs, and even if I put my foot down or pump the throttle a bit too get some fuel in there, it still takes a little while to pick up. ... or something like a manifold air leak perhaps? ...manifold heat.... (rec.autos.makers.vw.aircooled)
Re: heat pumps ...Jim Thompson wrote: ... They don't really pump it backwards, ... and indoor heat exchanger coils.... The heat pump is extracting heat energy from the outdoor air mass ... (sci.electronics.design)
Re: heat pumps ... They don't really pump it backwards, a valve interchanges the outdoor and indoor heat exchanger coils.... The glycol circuit is not a complicated Mollier cycle as with the refrigeration, it is a simple hydronic circulation of fluid through a loop without phase change. ... (sci.electronics.design)
Re: Energy alternatives for the UK. ... the panels I am in a quandary, given the choice of SE or WSW facing I wonder if the WSW mounting would produce enough heat toward the evening. ... have to choose between SE and SW, SW is the better bet because SE is hampered by morning mists in spring and autumn which 'burn off' by lunch time, and if you use most water in the evening, you should also have fewer storage losses. ... Works well where demand is high and preheat temp less than required temp. ... but if you pump it you trash any stratification. ... (uk.environment)
